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608 Multiple Alleles

TermDefinition
Multiple alleles - when there's three or more forms of a gene that code for a single trait Any single individual only has two of those alleles
Dominance hierarchy - can occur when there are multiple alleles one alleles is dominant over all the others the second is recessive to the dominant allele but is dominant to all the others the third is recessive to the first two but dominant to the others etc.
Blood types - A, B, AB, O Defined by the type of antigens found on the outside of an individual's red blood cells For instance, type A blood is blood with the A antigens on the red blood cells
Type AB blood - A and B are codominant If you have AB blood, you have both A antigens and B antigens on the outside of your red blood cells If you have AB blood, you do not produce any blood-type antibodies
Type O blood - has no antigens on the outside of the red blood cells has anti-A and anti-B antibodies
Antigens - a substances that is attacked by antibodies stands for "antibody generators" because it causes your immune system to produce antibodies to attack it
Antibodies - Proteins that attach to antigens They mark the antigen for destruction by the immune system
Blood transfusion - transfer of blood from one person to another for medical purposes
Universal donor - Type O blood Anyone can safely receive a transfusion of type O blood because there are not antigens on the red blood cells
Universal recipient - type AB blood People with type AB blood can safely receive transfusions of any blood type because they do not make any blood-type antibodies
Created by: Mr. Ford
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